DocumentCode :
1181080
Title :
Theory of ultrafast nonlinear refraction in semiconductor superlattices
Author :
Hutchings, D.C.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. of Glasgow, UK
Volume :
10
Issue :
5
fYear :
2004
Firstpage :
1124
Lastpage :
1132
Abstract :
A theoretical study is undertaken into the Kerr nonlinear refraction observable in the transparency window in semiconductor heterostructures. Symmetry considerations indicate that the number of nonzero, independent tensor components increases from three to eight for single wavelength third-order nonlinear processes with the usual growth orientation. These are related to the observable phenomena of self-phase-modulation, cross-phase-modulation, and four-wave-mixing of the orthogonal polarization components in the usual waveguide geometry. For a 14:14 GaAs-AlAs superlattice, all eight independent elements are calculated. It is shown that the nonlinear response is highly anisotropic. The modification of the nonlinear coefficients with quantum well intermixing is investigated, with a several-fold reduction in value predicted. This modification could be exploited in some long-standing and novel nonlinear optical experiments.
Keywords :
III-V semiconductors; aluminium compounds; gallium arsenide; high-speed optical techniques; multiwave mixing; optical Kerr effect; self-phase modulation; semiconductor quantum wells; semiconductor superlattices; anisotropic nonlinear response; cross-phase modulation; four-wave mixing; quantum well intermixing; self-phase modulation; semiconductor superlattices; transparency window; ultrafast Kerr nonlinear refraction; Anisotropic magnetoresistance; Geometrical optics; Geometry; Nonlinear optics; Optical waveguides; Polarization; Semiconductor superlattices; Semiconductor waveguides; Tensile stress; Waveguide components; Kerr effect; nonlinear optics; semiconductor quantum wells;
fLanguage :
English
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
Publisher :
ieee
ISSN :
1077-260X
Type :
jour
DOI :
10.1109/JSTQE.2004.836466
Filename :
1366386
Link To Document :
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